Home / 218,319.88-301,281.36-121,521.67

Finding the Fourth Proportional to 218,319.88, 301,281.36 and 121,521.67

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Solution

The fourth proportional to 218,319.88, 301,281.36 and 121,521.67 is: 167,699.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,319.88 : 301,281.36 = 121,521.67 : x
  2. Step 2: Convert to fraction form
    218,319.88/301,281.36 = 121,521.67/x
  3. Step 3: Cross multiply
    218,319.88x = 301,281.36 × 121,521.67
  4. Step 4: Simplify right side
    218,319.88x = 36,612,213,399.46
  5. Step 5: Solve for x
    x = 36,612,213,399.46/218,319.88
  6. Step 6: Final answer
    x = 167,699.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.